IndiGo is headquartered at Gurgaon, Haryana, India. Indigo is the most efficient airline and has become the largest fleet in India. It has its primary hub at Indira Gandhi International Airport, Delhi. Twenty dots arranged in the shape of an aircraft serves as the logo of the airline. The airline uses a two tone blue livery on a white background with the belly of the aircraft painted in Indigo with the logo in white.